Road-vehicle wheel-axle.



L. GRANIERI.

ROAD VEHICLE WHEEL AXLE.

APPLIOATION FILED MAY 12, 1908.

903,080. Patented Nov. 3, 190's.

WITNESSES A;

af/m% UNITED ETATg PATENT @FFIQ.

LUIGI GRANIERI, OF ROME, ITALY, ASSIGNOR TOTHE FIRM OF A. G. E; S. SOGIETA IN A'CQO- MANDITA SEMPLIGE PER IESERGIZIO DEI BREVETTI GRANIERI, OF HOME, ITALY.

ROAD-VEHICLE WHEEL-AXLE.

' Specification of Letters Patent.

Patented No... e, 1908.

Application filed May 12, 1908. Serial No. 432,475.

To all whom it may concern:

Be it known that I, LUIGI GRANIERI, a subject of the King of Italy, residing at Rome, Italy, mechanical engineer, have invented certain new and useful Improve-' ments in and Relating to Road-Vehicle Wheel-Axles.

The object of the present invention is to provide a road vehicle wheel axle which differs from those known by its not being of one piece but having independent journals connected to the main treeby pivoted parallelograms which in turn are elastically connected to each other.

The annexed drawings show two examples of the invention, Figure 1 being a partially sectionalview of a' form of the invention in which the elastic connection between the pivoted parallelograms consists in a spring device, while Fig. 2 is a similar view of a form of the invention in which such elastic connection consists in air cylinders.

' In the said drawing, 1 is the main axle tree, 2 the journals, 3 the pivoted paralleloing device the with, as state grams, 4 the reaction spring, 5 the road wheel, 6 the rims, 7 the air cushioning device, 8 a solid tire comprising say a plurality of leather bands or layers, '9 a rubber tire fixed to the rim or hoop by bolts 10.

D The purpose of the above described device 1s to do away with pneumatic tires for road and motor vehicles, and replace them advantageousl by the elastic spring or air CUSlllOIllIlg evice asshown.

3 are rigid angular extensions of the piyoted parallelograms 3, and between the sald extensions the elastic connection 4 is inserted which in the form shown in Fig. 1 is asprmg link, while in Fig. 2 it consists 111 two a r cylinders slidin almost but not perfectly tightly the one Wlfilll'l the other.

The operation of the device is obvious. The shoe s from the unevennesses of the road are transmitted from the elastic treads or tires 8 or 9 to the axle journals 2 and from the latter to the deformable pivoted arallelograms {3 which inturn transmit t em to the cushioning devices 4 or 7, respectively, by which they are taken up and absorbed.

As by the above described shock cushiongneumatic tires are done away the rims of the wheels instead of a simple flat iron hoop may comprise a hoop with a groove having a laterally removable side such as to be ca able of,inserting therein a series of radial y arranged leather rings or layers of an elastic material; or other antislipping and shock cushioning means.

It is understood that the two forms set forth are merely illustrative, as any elastic connecting link or means between the two deformable pivoted parallelograms may be 'used within the scope of the present inventensions of the said parallelograms.

2. Elastic axle-tree for road vehicle wheels such as described, com rising in combination axle journals, deforma le pivoted parallelograms connected to the said journals, rigid angular extensions of the said parallelograms and an air cushioning device connecting the said extensions of the said parallelo rams.

3. Elastic axle-tree for road vehic e wheels such as described, comprising in combination axle journals, deformable pivoted parallelograms connected to the said journals, rigid angular extensions of the said parallelograms and a spring connecting the said extensions of the said parallelograms.

4. Elastic axle-tree for road vehicle wheels such as described, comprising in combination axle journals, deformable pivoted parallelo grams'connected to the said journals, rigid In testimony whereof I have aflixed my signature in presence of two witnesses.

LUIGI GRANIERI.

Witnesses:

DIU'LIO NARDORI, PAGO CENTUNEO. 

